Application of 1018505-59-3 , The common heterocyclic compound, 1018505-59-3, name is 5-(4-Ethylpiperazin-1-yl)pyridin-2-amine, molecular formula is C11H18N4, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
The 4 – (2 – chloro -3 – fluoro – pyrazine amino) -2 – pyrimidine formic acid (1.35 g 1.2 eq), 5 – (4 – ethyl – piperazine -1 – yl) – piperidine -2 – amino (0.81 g 1 eq) and triethylamine (500 mul) in DMF (15 ml) in, then added HBTU (1.51 g 1.5 eq). The mixture stirring at room temperature to 16 hours, then EtOAc (50 ml) and saturated NaHCO3Solution (15 ml), and for separating each layer of EtOAc (2 × 15 ml) extraction the aqueous layer, the combined organic layer dried (MgSO4), filtering and evaporation to dryness, the residue through the column chromatography purification, and to obtain white solid compound of 1.42 g (yield: 62%).
The synthetic route of 1018505-59-3 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Jiangxi Runze Pharmaceutical Co., Ltd.; Liao Niansheng; Zou Mingming; Hu Xiande; Sui Rongchun; Xu Man; (14 pag.)CN108689997; (2018); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem